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Perpendicular Lines
Two lines are perpendicular if:
$$l_1l_2+m_1m_2+n_1n_2=0$$
Equivalently, using direction ratios:
$$a_1a_2+b_1b_2+c_1c_2=0$$
Usage
- Used to test whether two lines are perpendicular.
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Perpendicular Lines
Two lines are perpendicular if:
$$l_1l_2+m_1m_2+n_1n_2=0$$
Equivalently, using direction ratios:
$$a_1a_2+b_1b_2+c_1c_2=0$$
Usage
- Used to test whether two lines are perpendicular.
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